WM8326
Production Data
REFER TO
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
DC-DC1 Voltage Ramp rate
R16470
(4056h) DC1
Control 1
DC1_RATE
[1:0]
15:14
10
00 = 1 step every 32us
01 = 1 step every 16us
10 = 1 step every 8us
11 = Immediate voltage change
DC-DC1 Clock Phase Control
0 = Normal
DC1_PHASE
12
0
1 = Inverted
DC1_FREQ
[1:0]
DC-DC1 Switching Frequency
00 = Reserved
9:8
00
01 = 2.0MHz (2.2uH output inductor)
10 = 4.0MHz (1uH output inductor)
11 = Reserved
This field can only be written to by loading configuration
settings from OTP/ICE. In all other cases, this field is
Read Only.
DC1_FLT
DC-DC1 Output float
7
0
0 = DC-DC1 output discharged when disabled
1 = DC-DC1 output floating when disabled
DC-DC1 Soft-Start Control
(Duration in each of the 8 startup current limiting steps.)
00 = 32us steps
DC1_SOFT_ST
ART [1:0]
5:4
00
01 = 64us steps
10 = 128us steps
11 = 256us steps
DC1_CAP [1:0]
DC-DC1 Output Capacitor
00 = Reserved
1:0
00
01 = Reserved
10 = 22uF to 47uF
11 = Reserved
This field can only be written to by loading configuration
settings from OTP/ICE. In all other cases, this field is
Read Only.
Register 4056h DC1 Control 1
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R16471
(4057h) DC1
Control 2
DC1_ERR_AC
T [1:0]
DC-DC1 Error Action (Undervoltage)
00 = Ignore
15:14
00
01 = Shut down converter
10 = Shut down system (Device Reset)
11 = Reserved
Note that an Interrupt is always raised.
DC-DC1 Hardware Control Source
00 = Disabled
DC1_HWC_SR
C [1:0]
12:11
00
01 = Hardware Control 1
10 = Hardware Control 2
11 = Hardware Control 1 or 2
DC-DC1 Hardware Control Voltage select
0 = Set by DC1_ON_VSEL
1 = Set by DC1_SLP_VSEL
DC1_HWC_VS
EL
10
0
PD, June 2012, Rev 4.0
190
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
